cahec achec chaec hcaec ahcec hacec caehc acehc ceahc ecahc aechc eachc cheac hceac cehac echac hecac ehcac ahecc haecc aehcc eahcc heacc ehacc cahce achce chace hcace ahcce hacce cache acche ccahe ccahe acche cache chcae hccae cchae cchae hccae chcae ahcce hacce achce cahce hcace chace caech acech ceach ecach aecch eacch caceh acceh ccaeh ccaeh acceh caceh cecah eccah cceah cceah eccah cecah aecch eacch acech caech ecach ceach checa hceca cehca echca hecca ehcca chcea hccea cchea cchea hccea chcea cecha eccha cceha cceha eccha cecha hecca ehcca hceca checa echca cehca ahecc haecc aehcc eahcc heacc ehacc ahcec hacec achec cahec hcaec chaec aechc eachc acehc caehc ecahc ceahc hecac ehcac hceac cheac echac cehac
Note: these 'words' (valid or invalid) are all the permutations of the word cahec. These words are obtained by scrambling the letters in cahec.